# Cimon is ostracised as Pericles’ faction thickens after Ephialtes

Date: 461

## The fact

About 461 BCE Cimon was ostracised as the post-Ephialtes conflict closed. The dated expulsion is not jury-pay and not the later ostracism of Thucydides son of Melesias. [Pericles](/people/pericles)’s documented role is: Cimon was ostracised about 461 after the Areopagus fight. Ephialtes had already been murdered; Pericles’ circle benefited; he did not uniquely invent ostracism. Do not twin this with the existing jury-pay row. Ostracism is not misthos. Later editors, printers, and excavators remain named where they appear. Pericles's documented role is: Cimon was ostracised about 461 after the Areopagus fight. Ephialtes had already been murdered; Pericles’ circle benefited; he did not uniquely invent ostracism.

## Context

A failed Spartan earthquake-help, Areopagus reform, and unnamed sherd-voters already structure the file. A beneficiary is not unique authorship of every sherd. Later Plutarch is not a tape. Named others on the file: Cimon as exile, unnamed Athenian voters, and Ephialtes as murdered predecessor share the file. The public setting is the file around -0461-01-01. Unnamed clerks, soldiers, printers, or later editors may appear without becoming this instrument. The instrument stays Cimon is ostracised as Pericles’ faction thickens after Ephialtes. The setting of Cimon is ostracised as Pericles’ faction thickens after Ephialtes is the public file around -0461-01-01. Shared offices, unnamed crews, printers, or later editors may appear without becoming this instrument. Driver [political-polarization](/drivers/political-polarization) is attached because the significance names a mechanism from this act, not because a standing list needed coverage.

Shared responsibility is part of Cimon is ostracised as Pericles’ faction thickens after Ephialtes. Naming Pericles does not delete co-authors, institutions, or later transmitters. The lag from -0461-01-01 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them.

## Evidence and sources

Britannica’s Pericles and Cimon lives independently date a c. 461 ostracism. Official: Britannica — Pericles, ostracism of Cimon (https://www.britannica.com/biography/Pericles-Athenian-statesman; Encyclopaedia Britannica). Independent: Britannica — Cimon, ostracism (https://www.britannica.com/biography/Cimon; Encyclopaedia Britannica). The two URLs are different pages. Where the carrier is a later edition or a received narrative, that limit is stated rather than upgraded to an autograph. Official carrier: Britannica — Pericles, ostracism of Cimon (https://www.britannica.com/biography/Pericles-Athenian-statesman; Encyclopaedia Britannica). Independent carrier: Britannica — Cimon, ostracism (https://www.britannica.com/biography/Cimon; Encyclopaedia Britannica).

Official or archival record: Britannica — Pericles, ostracism of Cimon (https://www.britannica.com/biography/Pericles-Athenian-statesman; Encyclopaedia Britannica).

## Significance

Worsening polarisation path: a ten-year expulsion of a rival leader. Complex shared vote. Welfare reading worsening. The attached mechanism is A dated ostracism polarised Athens by expelling a conservative-pro-Spartan leader for a decade. Lag to any modern indicator is not treated as zero. This path is attached because the mechanism is named from this act, not because a driver list needed coverage. The welfare reading on this path is worsening.

## What is established and what is not

Established: Cimon’s ostracism c. 461 in Pericles’ file. Not established: unique sherd-counts as a welfare series. Established: a sourced public record of Cimon is ostracised as Pericles’ faction thickens after Ephialtes under -0461-01-01. Established: a sourced public record of Cimon is ostracised as Pericles’ faction thickens after Ephialtes under -0461-01-01.

Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts.

If a number is not in the two records named above, it is not supplied here.

Confidence is stated on the impact path, not hidden in adjectives. Do not twin this with the existing jury-pay row. Ostracism is not misthos. Mixed effects of Cimon is ostracised as Pericles’ faction thickens after Ephialtes are separate paths.

The attached driver is political-polarization. The welfare reading used in this dossier is worsening. That reading is an impact-path choice, not a property stored on the Fact itself.

## People

- Pericles: https://factrail.ai/people/pericles

## Drivers

- Political Polarization: https://factrail.ai/drivers/political-polarization

## Sources

- https://www.britannica.com/biography/Cimon
- https://www.britannica.com/biography/Pericles-Athenian-statesman

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/per-cimon-ostracism-461